Merge tag 'mips_6.3_1' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux

Pull more MIPS updates from Thomas Bogendoerfer:
 "A few more cleanups and fixes"

* tag 'mips_6.3_1' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux:
  MIPS: Workaround clang inline compat branch issue
  mips: dts: ralink: mt7621: add phandle to system controller node for watchdog
  mips: dts: ralink: mt7621: rename watchdog node from 'wdt' into 'watchdog'
  mips: ralink: make SOC_MT7621 select PINCTRL
  mips: remove SYS_HAS_CPU_MIPS32_R1 from RALINK
  MIPS: cevt-r4k: Offset the value used to clear compare interrupt
  MIPS: smp-cps: Don't rely on CP0_CMGCRBASE
  MIPS: Remove DMA_PERDEV_COHERENT

Author: torvalds

arch/mips/Kconfig

@@ -610,7 +610,6 @@ config RALINK
 	select DMA_NONCOHERENT
 	select IRQ_MIPS_CPU
 	select USE_OF
-	select SYS_HAS_CPU_MIPS32_R1
 	select SYS_HAS_CPU_MIPS32_R2
 	select SYS_SUPPORTS_32BIT_KERNEL
 	select SYS_SUPPORTS_LITTLE_ENDIAN
@@ -1080,11 +1079,6 @@ config FW_CFE
 config ARCH_SUPPORTS_UPROBES
 	bool
 
-config DMA_PERDEV_COHERENT
-	bool
-	select ARCH_HAS_SETUP_DMA_OPS
-	select DMA_NONCOHERENT
-
 config DMA_NONCOHERENT
 	bool
 	#
@@ -3206,6 +3200,10 @@ config CC_HAS_MNO_BRANCH_LIKELY
 	def_bool y
 	depends on $(cc-option,-mno-branch-likely)
 
+# https://github.com/llvm/llvm-project/issues/61045
+config CC_HAS_BROKEN_INLINE_COMPAT_BRANCH
+	def_bool y if CC_IS_CLANG
+
 menu "Power management options"
 
 config ARCH_HIBERNATION_POSSIBLE

arch/mips/boot/dts/ralink/mt7621.dtsi

@@ -70,9 +70,10 @@
 					     "250m", "270m";
 		};
 
-		wdt: wdt@100 {
+		wdt: watchdog@100 {
 			compatible = "mediatek,mt7621-wdt";
 			reg = <0x100 0x100>;
+			mediatek,sysctl = <&sysc>;
 		};
 
 		gpio: gpio@600 {

arch/mips/include/asm/asm.h

@@ -336,7 +336,7 @@ symbol		=	value
  */
 #ifdef CONFIG_WAR_R10000_LLSC
 # define SC_BEQZ	beqzl
-#elif MIPS_ISA_REV >= 6
+#elif !defined(CONFIG_CC_HAS_BROKEN_INLINE_COMPAT_BRANCH) && MIPS_ISA_REV >= 6
 # define SC_BEQZ	beqzc
 #else
 # define SC_BEQZ	beqz

arch/mips/include/asm/smp-cps.h

@@ -7,6 +7,8 @@
 #ifndef __MIPS_ASM_SMP_CPS_H__
 #define __MIPS_ASM_SMP_CPS_H__
 
+#define CPS_ENTRY_PATCH_INSNS	6
+
 #ifndef __ASSEMBLY__
 
 struct vpe_boot_config {
@@ -30,6 +32,8 @@ extern void mips_cps_boot_vpes(struct core_boot_config *cfg, unsigned vpe);
 extern void mips_cps_pm_save(void);
 extern void mips_cps_pm_restore(void);
 
+extern void *mips_cps_core_entry_patch_end;
+
 #ifdef CONFIG_MIPS_CPS
 
 extern bool mips_cps_smp_in_use(void);

arch/mips/kernel/cevt-r4k.c

@@ -200,7 +200,7 @@ int c0_compare_int_usable(void)
 	 */
 	if (c0_compare_int_pending()) {
 		cnt = read_c0_count();
-		write_c0_compare(cnt);
+		write_c0_compare(cnt - 1);
 		back_to_back_c0_hazard();
 		while (read_c0_count() < (cnt  + COMPARE_INT_SEEN_TICKS))
 			if (!c0_compare_int_pending())
@@ -228,7 +228,7 @@ int c0_compare_int_usable(void)
 	if (!c0_compare_int_pending())
 		return 0;
 	cnt = read_c0_count();
-	write_c0_compare(cnt);
+	write_c0_compare(cnt - 1);
 	back_to_back_c0_hazard();
 	while (read_c0_count() < (cnt + COMPARE_INT_SEEN_TICKS))
 		if (!c0_compare_int_pending())

arch/mips/kernel/cps-vec.S

@@ -13,6 +13,7 @@
 #include <asm/mipsregs.h>
 #include <asm/mipsmtregs.h>
 #include <asm/pm.h>
+#include <asm/smp-cps.h>
 
 #define GCR_CPC_BASE_OFS	0x0088
 #define GCR_CL_COHERENCE_OFS	0x2008
@@ -80,25 +81,20 @@
 	 nop
 	.endm
 
-	/* Calculate an uncached address for the CM GCRs */
-	.macro	cmgcrb	dest
-	.set	push
-	.set	noat
-	MFC0	$1, CP0_CMGCRBASE
-	PTR_SLL	$1, $1, 4
-	PTR_LI	\dest, UNCAC_BASE
-	PTR_ADDU \dest, \dest, $1
-	.set	pop
-	.endm
 
 .balign 0x1000
 
 LEAF(mips_cps_core_entry)
 	/*
-	 * These first 4 bytes will be patched by cps_smp_setup to load the
-	 * CCA to use into register s0.
+	 * These first several instructions will be patched by cps_smp_setup to load the
+	 * CCA to use into register s0 and GCR base address to register s1.
 	 */
-	.word	0
+	.rept   CPS_ENTRY_PATCH_INSNS
+	nop
+	.endr
+
+	.global mips_cps_core_entry_patch_end
+mips_cps_core_entry_patch_end:
 
 	/* Check whether we're here due to an NMI */
 	mfc0	k0, CP0_STATUS
@@ -121,8 +117,7 @@ not_nmi:
 	mtc0	t0, CP0_STATUS
 
 	/* Skip cache & coherence setup if we're already coherent */
-	cmgcrb	v1
-	lw	s7, GCR_CL_COHERENCE_OFS(v1)
+	lw	s7, GCR_CL_COHERENCE_OFS(s1)
 	bnez	s7, 1f
 	 nop
 
@@ -132,7 +127,7 @@ not_nmi:
 
 	/* Enter the coherent domain */
 	li	t0, 0xff
-	sw	t0, GCR_CL_COHERENCE_OFS(v1)
+	sw	t0, GCR_CL_COHERENCE_OFS(s1)
 	ehb
 
 	/* Set Kseg0 CCA to that in s0 */
@@ -305,8 +300,7 @@ LEAF(mips_cps_core_init)
  */
 LEAF(mips_cps_get_bootcfg)
 	/* Calculate a pointer to this cores struct core_boot_config */
-	cmgcrb	t0
-	lw	t0, GCR_CL_ID_OFS(t0)
+	lw	t0, GCR_CL_ID_OFS(s1)
 	li	t1, COREBOOTCFG_SIZE
 	mul	t0, t0, t1
 	PTR_LA	t1, mips_cps_core_bootcfg
@@ -366,8 +360,9 @@ LEAF(mips_cps_boot_vpes)
 	has_vp	t0, 5f
 
 	/* Find base address of CPC */
-	cmgcrb	t3
-	PTR_L	t1, GCR_CPC_BASE_OFS(t3)
+	PTR_LA	t1, mips_gcr_base
+	PTR_L	t1, 0(t1)
+	PTR_L	t1, GCR_CPC_BASE_OFS(t1)
 	PTR_LI	t2, ~0x7fff
 	and	t1, t1, t2
 	PTR_LI	t2, UNCAC_BASE

arch/mips/kernel/smp-cps.c

@@ -162,6 +162,8 @@ static void __init cps_prepare_cpus(unsigned int max_cpus)
 	 */
 	entry_code = (u32 *)&mips_cps_core_entry;
 	uasm_i_addiu(&entry_code, 16, 0, cca);
+	UASM_i_LA(&entry_code, 17, (long)mips_gcr_base);
+	BUG_ON((void *)entry_code > (void *)&mips_cps_core_entry_patch_end);
 	blast_dcache_range((unsigned long)&mips_cps_core_entry,
 			   (unsigned long)entry_code);
 	bc_wback_inv((unsigned long)&mips_cps_core_entry,

arch/mips/ralink/Kconfig

@@ -54,7 +54,7 @@ choice
 		select HAVE_PCI
 		select PCI_DRIVERS_GENERIC
 		select SOC_BUS
-		select PINCTRL_MT7621
+		select PINCTRL
 
 		help
 		  The MT7621 system-on-a-chip includes an 880 MHz MIPS1004Kc